<template>
  <header class="header">
    <div class="collapse-btn" @click="toggleCollapse">
      <i v-if="!collapse" class="el-icon-s-fold"></i>
      <i v-else class="el-icon-s-unfold"></i>
    </div>
    <div class="logo">后台管理系统</div>
    <div class="header-right">
      <div class="user-con">
        <!-- 全屏显示 -->
        <div class="btn-fullscreen" @click="handleFullScreen">
          <el-tooltip
            effect="dark"
            :content="fullscreen ? `取消全屏` : `全屏`"
            placement="bottom"
          >
            <i class="el-icon-rank"></i>
          </el-tooltip>
        </div>
        <!-- 消息中心 -->
        <div class="btn-bell">
          <el-tooltip
            effect="dark"
            :content="message ? `有${message}条未读消息` : `消息中心`"
            placement="bottom"
          >
            <router-link to>
              <i class="el-icon-bell"></i>
            </router-link>
          </el-tooltip>
          <span class="btn-bell-badge" v-if="message"></span>
        </div>
        <!-- 用户头像 -->
        <div class="user-avator">
          <img :src="user.avatar" />
        </div>
        <!-- 用户名下拉菜单 -->
        <el-dropdown class="user-name" trigger="click" @command="handleCommand">
          <span class="el-dropdown-link">
            {{ user.nickname }}
            <i class="el-icon-caret-bottom"></i>
          </span>
          <el-dropdown-menu slot="dropdown">
            <el-dropdown-item command="info">个人信息</el-dropdown-item>
            <el-dropdown-item divided command="loginout"
              >退出登录</el-dropdown-item
            >
          </el-dropdown-menu>
        </el-dropdown>
      </div>
    </div>
  </header>
</template>

<script>
import { mapGetters, mapActions } from "vuex";
export default {
  data() {
    return {
      fullscreen: false,
      message: 2,
      user: {
        nickname: "鱼眠",
        avatar:
          "https://imgsa.baidu.com/forum/w%3D580/sign=e58c8eb2a4c379317d688621dbc5b784/4e76202dd42a2834a9e77abf50b5c9ea14cebff4.jpg",
      },
    };
  },
  computed: {
    ...mapGetters(["collapse"]),
  },
  methods: {
    ...mapActions(["toggleCollapse"]),
    // 用户名下拉菜单选择事件
    handleCommand(command) {
      if (command === "loginout") {
        // this.delUser();
        // this.$router.push("/login");
      } else if (command === "info") {
        // this.$router.push("/information/show");
      }
    },
    // 侧边栏折叠
    collapseChage() {
      this.collapse = !this.collapse;
    },
    // 全屏事件
    handleFullScreen() {
      let element = document.documentElement;
      if (this.fullscreen) {
        if (document.exitFullscreen) {
          document.exitFullscreen();
        } else if (document.webkitCancelFullScreen) {
          document.webkitCancelFullScreen();
        } else if (document.mozCancelFullScreen) {
          document.mozCancelFullScreen();
        } else if (document.msExitFullscreen) {
          document.msExitFullscreen();
        }
      } else {
        if (element.requestFullscreen) {
          element.requestFullscreen();
        } else if (element.webkitRequestFullScreen) {
          element.webkitRequestFullScreen();
        } else if (element.mozRequestFullScreen) {
          element.mozRequestFullScreen();
        } else if (element.msRequestFullscreen) {
          // IE11
          element.msRequestFullscreen();
        }
      }
      this.fullscreen = !this.fullscreen;
    },
  },
  created() {},
  mounted() {
    if (document.body.clientWidth < 1500) {
      this.toggleCollapse();
    }
  },
};
</script>

<style lang="scss" scoped>
.header {
  position: relative;
  box-sizing: border-box;
  width: 100%;
  height: 70px;
  font-size: 22px;
  color: #fff;
  background-color: #334144;
  .collapse-btn {
    float: left;
    padding: 0 21px;
    cursor: pointer;
    line-height: 70px;
  }
  .logo {
    float: left;
    width: 250px;
    line-height: 70px;
  }
  .header-right {
    float: right;
    padding-right: 50px;
    .user-con {
      display: flex;
      height: 70px;
      align-items: center;
      .btn-fullscreen {
        transform: rotate(45deg);
        margin-right: 5px;
        font-size: 24px;
      }
      .btn-bell,
      .btn-fullscreen {
        position: relative;
        width: 30px;
        height: 30px;
        text-align: center;
        border-radius: 15px;
        cursor: pointer;
      }
      .btn-bell-badge {
        position: absolute;
        right: 0;
        top: -2px;
        width: 8px;
        height: 8px;
        border-radius: 4px;
        background: #f56c6c;
        color: #fff;
      }
      .btn-bell {
        a {
          display: block;
          height: 32px;
        }
        .el-icon-bell {
          color: #fff;
        }
      }
      .user-name {
        margin-left: 10px;
      }
      .user-avator {
        margin-left: 20px;
      }
      .user-avator img {
        display: block;
        width: 45px;
        height: 45px;
        border-radius: 50%;
      }
      .el-dropdown-link {
        color: #fff;
        cursor: pointer;
      }
      .el-dropdown-menu__item {
        text-align: center;
      }
    }
  }
}
</style>
